But you've mitigated that entirely by giving them a work around that probably won't come up as an issue unless their power can be nullified and they run into someone who can nullify powers. There honestly doesn't feel like there's a point to it other than for the 'blind badass' trope, which doesn't even work because they have eyes, just not fleshy ones.
Hmm ok. My reasoning goes something like this... taylor is stupid over powered. Yes she has limited reserves, yes she has to recharge, but her powers are bullshit. She's won every verbal sparring match she's gotten into and the variety of her abilities has no sold every cape... right up until the E88 payed her a visit. She overplayed her hand and the villains lashed out and one of them had a trick she couldn't counter on fly.
She's still acting cocky because she has a reputation to uphold, but it's important to kick her off of that teenage "nothing can kill me" mindset. That's the reasoning for why it's important to Taylor.
For the audience, boring fight scenes are boring. If Taylor can no sell everyone forever then what's the point in her even fighting? you all have to know, implicitly, that she can fail to a certain degree for there to be tension and before that point I don't think that was ever really clear. Her losing that debate and her second eye was something which made that clear and wouldn't actually slow her down enough to throw off the pace of the story.
KHR for all that it was a shounen goofiness had some really fridge horror moments. Chrome was wandering around missing several internal organs. The only reason she never dropped dead was because she had semi permanent illusions replacing them. That's the broad strokes of what inspired Taylor's prosthetic eyes.
but on the first hand again, if the author doesn't want the EB fight to seriously change anything why not just have levy attack somewhere else and have taylor decide to not to go?
Frankly? Because sometimes even though I love to do things differently it's just easier to throw my hands up and let the rails of canon have one. Kaiser's death with no Hookwolf to split them, and no reason for Purity to get involved turns the Empire into a loose collection of capes with no real leaders, they're finished.the Protectorate still have a presence, they've taken losses, but aren't out of the running just yet.
Coil can make his push now, and Taylor with him.
as for how well Taylor did against Levi?
We know, in canon that people have knocked off a few of ziz's wings in combat, because we see Chevalier fucking with EB bits to make his fancy new sword, at least I'm pretty sure it was more than just a few feathers he was playing with.
Taking of a full Limb is big, huge even but Rain and Sun flames wont make her all that much more effective against EB's, this was already the perfect mix and she tapped herself out cutting through just a leg. EB cores are next level bullshit. If she collaborated with Flechette? well she could pull of a parian impression and cube the fuckers but that would trigger an escalation either from the EB's or from Eidolon's subconscious. Not good.
Had Leviathan stuck around it could have kept fighting at peek with a water leg, but that would be showing just how irrelevant damaging them is, and losing a leg really should count as sufficient damage to drive one off. I could have gone full wildbow and had Levi scour the coastline with tidal waves while backstroking around the bay in order to avenge his leg... but really fuck that shit.